PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1857572Reactor

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5950-00-681-7649 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-681-7649 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-681-7649. Primary manufacturer part number: 1857572.
Features
  • Reactor — FSC 5950
  • Mounting Method: THREADED STUD(S) SINGLE GROUP
  • Body Length: 4.500 INCHES NOMINAL IN
  • Reliability Indicator: NOT ESTABLISHED
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Nominal Thread Size: 0.164 INCHES SINGLE GROUP IN
  • Body Width: 2.375 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-681-7649, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-681-7649
Primary Part Number1857572
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Body Length4.500 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Mounting Facility Quantity4 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Nominal Thread Size0.164 INCHES SINGLE GROUP IN
Body Width2.375 INCHES NOMINAL IN
Inductance TypeFIXED
Body Height3.188 INCHES NOMINAL IN
Inductance Rating21.50 HENRY MAXIMUM SINGLE COMPONENT SINGLE WINDING
Terminal Type and Quantity2 STANDOFF, SOLDER LUG
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Thread Quantity Per Inch32 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Length2.125 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
DC Resistance Rating in Ohms2174.500 SINGLE COMPONENT SINGLE WINDING
Inclosure TypeHERMETICALLY SEALED
Winding Quantity1 SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5950-01-350-1235H940098-004B INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon
3110-01-419-40871003349 INTERCHANGEABLE
Plate,retaining,bearing
Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic
5310-01-432-622342755 INTERCHANGEABLE
Nut,plain,hexagon
Leslie Controls, Inc. Dba Leslie Controls Inc
4320-01-539-095342755 INTERCHANGEABLE
Impeller,pump,centrifugal
Generac Mobile Products, Llc
Cross-Reference Index
Part NumberManufacturer
1857572 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
W10614 Unisys Corp Systems Development (USA)
435648 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
42755 Freed Transformer Co (USA)
1003349 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
Related Parts
5950-01-350-1235INTERCHANGEABLE
COIL,RADIO FREQUENCY
H940098-004B
3110-01-419-4087INTERCHANGEABLE
PLATE,RETAINING,BEARING
1003349
5310-01-432-6223INTERCHANGEABLE
NUT,PLAIN,HEXAGON
42755
4320-01-539-0953INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
42755

Frequently Asked Questions

What is NSN 5950-00-681-7649?

NSN 5950-00-681-7649 is a Reactor, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-681-7649?

NSN 5950-00-681-7649 has 5 cross-referenced part numbers: 1857572 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), W10614 (Unisys Corp Systems Development), 435648 (Lockheed Martin Corporation Div Rms - Mitchel Field), 42755 (Freed Transformer Co), 1003349 (Lockheed Martin Corporation Div Rms - Mitchel Field).

What NSN replaces 5950-00-681-7649?

There are 4 known substitutes for 5950-00-681-7649: 5950-01-350-1235, 3110-01-419-4087, 5310-01-432-6223 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1857572?

Key specifications for 1857572: Mounting Method: THREADED STUD(S) SINGLE GROUP; Body Length: 4.500 INCHES NOMINAL IN; Reliability Indicator: NOT ESTABLISHED; Mounting Facility Quantity: 4 SINGLE GROUP. 18 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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